GTX 1080 vs RX 580 using i5-4570! HUGE BOTTLENECK?? (10 Games tested)

What is up my dudes? Today I wanted to find out if you really need a powerful GPU for your 4th gen i5. Maybe RX 580 8GB is all you need? Affiliate link if you are looking to buy one: https://s.click.aliexpress.com/e/_dSXX2Lv Games tested: Need for Speed Heat 1080p Ultra Tom Clancy's Rainbow Six Siege 1080p Ultra Overwatch 1080p Ultra Grand Theft Auto 5 (GTA V) 1080p Ultra Valorant 1440p Highest Just Cause 4 1080p Ultra Counter-Strike: Global Offensive (CS:GO) 1080p Low Fortnite 1080p Epic settings Red Dead Redemption 2 1080p Medium Metro Exodus 1080p Ultra Detailed test system specs: Intel Core i5-4570 2x4 (8GB) Crucial 1600MHz DDR3 RAM Gigabyte Gaming G1 GTX 1080 8GB and Sapphire Pulse RX 580 8GB ASRock H81 Pro BTC I-BOX CUBE II MAX 600W PSU If you have one of these processors, you'll have a very similar experience (i5-4460, i5-4590, i5-4670, i5-3570, i5-6400)